Document Detail

The effect of nitrous oxide on intracuff pressure of the size 2 ProSeal Laryngeal Mask Airway.
MedLine Citation:
PMID:  21489770     Owner:  NLM     Status:  Publisher    
STUDY OBJECTIVE: To investigate intracuff pressure changes in the ProSeal Laryngeal Mask Airway (PLMA) during 50% nitrous oxide (N(2)O) anesthesia. DESIGN: Prospective, randomized study. SETTING: Operating room of a university-affiliated hospital. PATIENTS: 40 ASA 1 and 2 children, aged 2 to 6 years, weighing 10-20 kg, undergoing elective inguinal herniorrhaphy with general anesthesia. INTERVENTIONS AND MEASUREMENTS: Patients were assigned to two groups (n = 20). Patients in Group A were anesthetized with 50% N(2)O in oxygen and sevoflurane, while patients in Group B were anesthetized with 50% air in oxygen and sevoflurane. PLMA cuffs were inflated with air. PLMA intracuff pressures starting from a baseline pressure of 30 mmHg were recorded using a pressure transducer for 30 minutes. The occurrence of postoperative throat discomfort was recorded. MAIN RESULTS: In Group A, who inhaled 50% N(2)O for 30 minutes, intracuff pressures reached 86.7 ± 10.4 mmHg, while in Group B, who inhaled 50% air for 30 minutes, intracuff pressures were 29.7 ± 1.0 mmHg. The postoperative throat complication rate in Group A was 45%, which was significantly higher than in Group B (5%). CONCLUSION: PLMA intracuff pressure increased significantly during 50% N(2)O anesthesia. The children's postoperative throat complication rate also was increased.
Ben-Zhen Chen; Li-Hui Luo; Lu Jiang; Ru-Rong Wang; Jingxia Li; Ling Tan
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-11
Journal Detail:
Title:  Journal of clinical anesthesia     Volume:  -     ISSN:  1873-4529     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8812166     Medline TA:  J Clin Anesth     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China; Department of Anesthesiology, Sichuan Provincial Hospital for Women and Children, Chengdu, Sichuan, 610031, China.
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